Seat base for child car seat



FIG. 1 is an isometric view showing the front and one side of our new design;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a back elevation view thereof;

FIG. 4 is a right-side elevation view thereof;

FIG. 5 is a left-side elevation view thereof;

FIG. 6 is a top elevation view thereof; and,

FIG. 7 is a bottom elevation view thereof. 

CLAIM The ornamental design for a seat base for child car seat, as shown and described. 